diff options
Diffstat (limited to 'include/linux/iomap.h')
| -rw-r--r-- | include/linux/iomap.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/iomap.h b/include/linux/iomap.h index 1df9ea187a9a..bc499ceae392 100644 --- a/include/linux/iomap.h +++ b/include/linux/iomap.h @@ -7,6 +7,7 @@ #include <linux/mm.h> #include <linux/types.h> #include <linux/mm_types.h> +#include <linux/blkdev.h> struct address_space; struct fiemap_extent_info; @@ -69,6 +70,12 @@ struct iomap { const struct iomap_page_ops *page_ops; }; +static inline sector_t +iomap_sector(struct iomap *iomap, loff_t pos) +{ + return (iomap->addr + pos - iomap->offset) >> SECTOR_SHIFT; +} + /* * When a filesystem sets page_ops in an iomap mapping it returns, page_prepare * and page_done will be called for each page written to. This only applies to @@ -116,6 +123,16 @@ struct iomap_ops { }; /* + * Main iomap iterator function. + */ +typedef loff_t (*iomap_actor_t)(struct inode *inode, loff_t pos, loff_t len, + void *data, struct iomap *iomap); + +loff_t iomap_apply(struct inode *inode, loff_t pos, loff_t length, + unsigned flags, const struct iomap_ops *ops, void *data, + iomap_actor_t actor); + +/* * Structure allocate for each page when block size < PAGE_SIZE to track * sub-page uptodate status and I/O completions. */ |